Matsya Purana — Kārtavīrya Arjuna’s Solar Boon and the Genealogy from Kroṣṭu to the Yādava Lines
आहुकश्चाप्यवन्तीषु स्वसारं चाहुकीं ददौ आहुकात्काश्यदुहिता द्वौ पुत्रौ समसूयत //
āhukaścāpyavantīṣu svasāraṃ cāhukīṃ dadau āhukātkāśyaduhitā dvau putrau samasūyata //
Āhuka, moreover, in the land of the Avantis, gave his own sister Āhukī in marriage. From Āhuka, the daughter of Kāśya bore two sons.
This verse does not discuss Pralaya; it is a genealogical note describing marriage connections and offspring within a royal lineage.
Indirectly, it reflects the Purāṇic emphasis on dynastic continuity and alliance-building through marriage—key elements of royal household governance and succession in traditional polity.
No Vāstu, temple-building, or ritual procedure is mentioned in this verse; its focus is strictly on lineage and birth of heirs.